src/base/utils/random.cpp

   1 /*
   2  * Bittorrent Client using Qt and libtorrent.
   3  * Copyright (C) 2017-2024  Mike Tzou (Chocobo1)
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18  *
  19  * In addition, as a special exception, the copyright holders give permission to
  20  * link this program with the OpenSSL project's "OpenSSL" library (or with
  21  * modified versions of it that use the same license as the "OpenSSL" library),
  22  * and distribute the linked executables. You must obey the GNU General Public
  23  * License in all respects for all of the code used other than "OpenSSL".  If you
  24  * modify file(s), you may extend this exception to your version of the file(s),
  25  * but you are not obligated to do so. If you do not wish to do so, delete this
  26  * exception statement from your version.
  27  */
  28
  29 #include "random.h"
  30
  31 #include <random>
  32
  33 #include <QtSystemDetection>
  34
  35 #if defined(Q_OS_LINUX)
  36 #include "randomlayer_linux.cpp"
  37 #elif defined(Q_OS_WIN)
  38 #include "randomlayer_win.cpp"
  39 #else
  40 #include "randomlayer_other.cpp"
  41 #endif
  42
  43 uint32_t Utils::Random::rand(const uint32_t min, const uint32_t max)
  44 {
  45     static RandomLayer layer;
  46
  47     // new distribution is cheap: https://stackoverflow.com/a/19036349
  48     std::uniform_int_distribution<uint32_t> uniform(min, max);
  49
  50     return uniform(layer);
  51 }